Creep Temperature for API X52 PSL2 Material

[jkoster]

Does anyone know at what temperature creep becomes a factor for API X52 PSL2 Material?

 

[metengr]

Use 700 deg F or higher for time dependent properties.

 

[jkoster]

Do you have a source for that information? This for a piping system operating at 10,000 PSI and 250°F.

 

[metengr]

My source would be use of equivalent materials as found in ASME B&PV Code, Section II, Part D. At 250 deg F you are well below the threshold for time dependent properties. The UTS or YS will govern piping design at this service temeprature.

 

[jkoster]

Thank you very much!

This is he same approach we have been using but have had trouble getting the authority to accept our design.